Match the definition and symbol to the correct symbiotic term
One organism benefits while the other is neither helped nor harmed
+/+
+/0
One organism harms another
+/-
Both organisms benefit
Mutualism
Parasitism
Commensalism
Question 3
3.
Cheetah killing a zebra is an example of
Question 4
4.
What is death rate?
Question 5
5.
What is the emigration rate?
Question 6
6.
What is the immigration rate?
Question 7
7.
What is the birth rate?
Question 8
8.
Birth rate causes the population to
Question 9
9.
A population of beetles was about 2,000 in the year 2002. In 2004, the size of the population was 5,000. Which statement explains the change?
Question 10
10.
When a population is at carrying capacity. The death rate is ….
1
Question 11
11.
Between month 1 and 4, is the population
1
1
Question 13
13.
Scientists have identified the elephant as a keystone species in the African savanna ecosystem. One reason is that the elephant digs holes to access groundwater that other organisms use as well. If the elephant population declined, what do you predict would happen to the ecosystem over time?
1
Question 12
12.
Compare the birth rate to death rate from month 1 to 5
Question 14
14.
As part of the ivory trade, the African elephant was killed for its tusks. The population of African elephants decreased from 26 million in the 1800s to just 415,000 today. What component would you need to add to the model to represent the interaction that caused the elephant population to change?
